Front door speaker distorting / failing. Amp or Speakers?

4.2 V8 32v Naturally Aspirated - 414 bhp
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lugars4
3rd Gear
Posts: 319
Joined: Tue Apr 27, 2010 3:34 pm
Location: Kent

Front door speaker distorting / failing. Amp or Speakers?

Post by lugars4 » Tue Aug 27, 2024 9:49 am

Hi all,

New fault, drivers door speaker(s) are starting to sound bad, its intermittent (or maybe tone related), i have to say it sounds like its both the main speaker and tweeter. So i have wondered if its a Amp or cable issue? I unplugged the tweeter and it was still coming from the main speaker, plugged it back in and was sure i could hear the tweeter distorting as well.....

Any ideas / experience on how to confirm diagnosis?
06 - B7 RS4 Saloon - Milltek Non-Res Valved. BMC Filter.

irishmike
3rd Gear
Posts: 397
Joined: Sat Sep 28, 2013 8:52 pm

Re: Front door speaker distorting / failing. Amp or Speakers?

Post by irishmike » Tue Aug 27, 2024 9:54 am

Is it only one side you notice it on?

I did have an issue with my amp years ago which sounds like what you describe, but it was across all speakers. Local audio Shop sorted it.
I'd try swapping speakers from left to right if it's only that side, could be pinched wires in the door somewhere.

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lugars4
3rd Gear
Posts: 319
Joined: Tue Apr 27, 2010 3:34 pm
Location: Kent

Re: Front door speaker distorting / failing. Amp or Speakers?

Post by lugars4 » Tue Aug 27, 2024 10:02 am

Thanks.

Yes just that door. Will pull the amp out to check for any signs of moisture as well. Then door card off and start to investigate....
06 - B7 RS4 Saloon - Milltek Non-Res Valved. BMC Filter.

r8wut
2nd Gear
Posts: 110
Joined: Sun Aug 13, 2023 12:13 pm

Re: Front door speaker distorting / failing. Amp or Speakers?

Post by r8wut » Fri Aug 30, 2024 5:14 pm

You can use VCDS to test the Output stages of ALL the Bose speakers, Under 56-Radio , Output Tests - (handy, and saves you the headache of ripping off the door-cards!) :
RS4 56-Radio Output TESTS.png

lugars4
3rd Gear
Posts: 319
Joined: Tue Apr 27, 2010 3:34 pm
Location: Kent

Re: Front door speaker distorting / failing. Amp or Speakers?

Post by lugars4 » Mon Sep 02, 2024 5:46 pm

Nice one, hadn't thought of trying that route!

Will give it a try.
06 - B7 RS4 Saloon - Milltek Non-Res Valved. BMC Filter.

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